AMENDMENT NO. 1 TO GAS GATHERING AGREEMENT FOR THE MERCURY, PANDORA,

Exhibit 10.25(b)

AMENDMENT NO. 1
TO GAS GATHERING AGREEMENT FOR THE MERCURY, PANDORA,

PLUTO AND SATURN GAS GATHERING SYSTEMS

This Amendment No. 1 to the Gas Gathering Agreement for the Mercury, Pandora, Pluto and Saturn Gas Gathering Systems (this “Amendment”) is made and entered into as of September 18, 2015 (the “Effective Date”), by and between EQT Production Company (“Producer”) and EQT Energy, LLC (collectively with Producer, “Shipper”), on the one hand, and EQM Gathering OPCO, LLC (“Gatherer”), on the other hand. Producer, Shipper and Gatherer are each referred to herein as a “Party” and collectively as the “Parties”.

WHEREAS, the Parties made and entered into that certain Gas Gathering Agreement for the Mercury, Pandora, Pluto and Saturn Gas Gathering Systems dated March 1, 2015 (the “Agreement”), pursuant to which, among other provisions, Shipper requested that Gatherer provide the gathering of natural gas on behalf of Shipper by receiving quantities of natural gas and redelivering it to or for Shipper’s account; and

WHEREAS, the Parties intend to amend the Agreement, upon the terms and subject to the conditions set forth herein.

NOW, THEREFORE, for good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, and intending to be legally bound, the Parties hereby agree as follows:

1.Definitions. All capitalized terms used but not otherwise defined or amended herein shall have the meanings ascribed to them in the Agreement.

2.Amendments.

a. Exhibit A-1 attached to the Agreement is hereby deleted in its entirety and replaced with revised Exhibit A-1, a copy of which is attached hereto.

b. The table set forth in Section III(A)(1) of Exhibit F attached to the Agreement is hereby deleted in its entirety and replaced with the table attached hereto as Exhibit F.

3.Effect of Amendment. The Agreement, as amended hereby, shall remain in full force and effect, and all terms hereof are hereby ratified and confirmed by the Parties.

4.Further Actions. The Parties agree to execute such other documents and take such further actions necessary to effectuate this Amendment.

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5.Counterparts. This Amendment may be executed in any number of counterparts, each of which shall be deemed an original and all of which together shall constitute one and the same agreement. It is agreed by the Parties that facsimile signature pages signed by the Parties shall be binding to the same extent as original signature pages.

6.Entire Agreement. This Amendment is the entire agreement between the Parties concerning the subject matter hereof and neither Party shall be bound by representations except as set forth in this Amendment.

7.Amendments. This Amendment may not be modified or amended except by a written agreement signed by the Parties.

[Remainder of page intentionally blank]

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IN WITNESS WHEREOF, the Parties have executed this Amendment as of the Effective Date.

EQT PRODUCTION COMPANY	EQM GATHERING OPCO, LLC
By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇	By: /s/ ▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇
Name: ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇	Name: ▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇
Title: EVP Production	Title: Vice President
EQT ENERGY, LLC
By: /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇
Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇▇
Title: EVP Commercial

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EXHIBIT A-1

RECEIPT POINTS, DELIVERY POINTS AND RECEIPT POINT MDQ

RECEIPT POINTS

	System	Receipt Point Meter ID	Receipt Point Meter Name	Receipt Point MDQ Mcf / Day
					Mercury	5100016	Big 176 Gathering MM A Run	68,600
	Mercury	5100042	Big 333/192 MM A Run	117,300
	Mercury	5100045	PNG 129 Gathering MM A Run	117,300
	Mercury	5100069	PNG 103 MM A RUN UPGRADE	117,300
	Mercury	5100070	PNG ▇▇▇ ▇▇ ▇ ▇▇▇ ▇▇▇▇▇▇▇	68,600
	Mercury	5100115	Big 7 MM	68,600
	Mercury	M5208892	Big 333/192 B Run	68,600
	Mercury	M5223136	BIG 176 Gathering MM B Run	117,300
	Mercury	M5223466	PNG ▇▇▇ ▇▇▇▇▇▇▇▇▇ ▇▇ ▇ ▇▇▇	▇▇▇,▇▇▇
	▇▇▇▇▇▇▇	▇▇▇▇▇▇▇▇	CPT 11 MM	68,600
	Pandora	M5214966	SMI 27 Gathering MM	117,300
	Pluto	24491	RSM16	68,600
	Pluto	24582	RSM110/112 Gathering Meter	68,600
	Pluto	24595	RSM 118 Gathering MM	68,600
	Pluto	24596	RSM 119 Gathering MM	68,600
	Pluto	M5219740	RSM110/112 Gathering Meter	68,600
	Saturn	24454	OXF 114, 115	19,600
	Saturn	24455	OXF 121	19,600
	Saturn	24456	OXF 43 and 44 MM	45,900
	Saturn	24470	OXF 149/150/156 MM A Run	45,900
	Saturn	24471	OXF 138 Interconnect	45,900
	Saturn	24472	OXF 127 Interconnect	45,900
	Saturn	24481	OX131/152/153Gathering MM	45,900
	Saturn	24492	WEU 1&2 B Gathering Meter	45,900
	Saturn	24556	OXF 16 MM	19,600
	Saturn	24625	OXF 131/152/153 Gathering B Run	45,900
	Saturn	5100020	PEN 15 Master Meter A Run	45,900
	Saturn	5100048	PEN15 MM B RUN	45,900
	Saturn	5100059	SMI 28 MM A Run	78,500
	Saturn	5100061	SMI 28 MM B Run	45,900
	Saturn	M5212896	WEU-8 Gathering MM	78,500
	Saturn	M5214202	WEU 51 MM	78,500
	Saturn	M5214970	WEU 6 Gathering MM A Run	45,900
	Saturn	M5222001	OXF 149/150/156MM B Run	45,900
	Saturn	M5223803	OXF 157-159 Gathering MM A Run	45,900
	Saturn	M5223804	OXF 157-159 Gathering MM B Run	45,900
	Saturn	M5225932	WEU 6 MM B Run	45,900
	Saturn	M5228452	WEU 1-2-49 MM	45,900

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DELIVERY POINTS

	System	Delivery Point Meter ID	Delivery Point Meter Name
				Mercury	5100025	MarkWest ▇▇▇▇▇▇ 2 (High pressure)
	Mercury	M5202956	Mercury to MarkWest B Run (High pressure)
	Mercury	M5209276	Mercury to MW - 16" run 1 (Low pressure)
	Mercury	M5209277	Mercury to MW - 16" run 2 (Low pressure)
	Mercury	5100017	Mercury to ▇▇▇ (▇▇▇▇▇▇ ▇▇▇▇▇▇)
	Mercury	M5224080	Mercury to ▇-▇▇▇ (▇▇▇▇▇▇ ▇▇▇▇▇▇)
	▇▇▇▇▇	▇▇▇▇▇	▇▇▇▇▇ to GSF-604
	Saturn	24452	▇▇▇▇▇▇ North to Equitrans Gathering
	Saturn	24453	▇▇▇▇▇▇ South to Equitrans Gathering
	Saturn	24484	Saturn Discharge to WG100
	Saturn	M5229563	Saturn ▇▇▇▇▇ ▇ & ▇ ▇▇▇▇▇▇▇▇▇ ▇▇ ▇▇▇▇▇

▇▇▇▇ ▇▇▇▇▇▇▇ DELIVERY POINT

	System	Delivery Point Meter ID	Delivery Point Meter Name
				Mercury	5100093	MarkWest ▇▇▇▇▇▇ (Logansport, West Virginia)
	Saturn	M5206528	NGLs from Saturn to WG100
	Saturn	M5229478	Saturn CS Liquids to WG100

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EXHIBIT F

Section III(A)(1) – Receipt Point Interconnect Data

	System	Meter ID	Meter Name	GPS Coordinates		MAOP	Min DQ Mcf/Day	Max DQ Mcf/Day
									Mercury	5100016	Big ▇▇▇ ▇▇▇▇▇▇▇▇▇ ▇▇ ▇ ▇▇▇	-▇▇.▇▇▇▇▇	39.55602	1,440	1,900	68,600
	Mercury	5100042	Big ▇▇▇/▇▇▇ ▇▇ ▇ ▇▇▇	-▇▇.▇▇▇▇▇	39.52385	1,440	3,200	117,300
	Mercury	5100045	PNG ▇▇▇ ▇▇▇▇▇▇▇▇▇ ▇▇ ▇ ▇▇▇	-▇▇.▇▇▇▇▇	39.55349	1,440	3,200	117,300
	Mercury	5100069	PNG ▇▇▇ ▇▇ ▇ ▇▇▇ ▇▇▇▇▇▇▇	-▇▇.▇▇▇▇▇	39.56334	1,440	3,200	117,300
	Mercury	5100070	PNG ▇▇▇ ▇▇ ▇ ▇▇▇ ▇▇▇▇▇▇▇	-▇▇.▇▇▇▇▇	39.56334	1,440	1,900	68,600
	Mercury	5100115	Big 7 MM	-80.61385	39.57679	1,440	1,900	68,600
	Mercury	M5208892	Big ▇▇▇/▇▇▇ ▇ ▇▇▇	-▇▇.▇▇▇▇▇	39.52385	1,440	1,900	68,600
	Mercury	M5223136	BIG ▇▇▇ ▇▇▇▇▇▇▇▇▇ ▇▇ ▇ ▇▇▇	-▇▇.▇▇▇▇▇	39.55602	1,440	3,200	117,300
	Mercury	M5223466	PNG ▇▇▇ ▇▇▇▇▇▇▇▇▇ ▇▇ ▇ ▇▇▇	-▇▇.▇▇▇▇▇	39.55349	1,440	3,200	117,300
	Pandora	M5214491	CPT 11 MM	-80.72431	39.38134	1,440	1,900	68,600
	Pandora	M5214966	SMI 27 Gathering MM	-80.7027132	39.3813596	1,440	3,200	117,300
	Pluto	24491	RSM16	-80.14147	39.32203	1,440	1,900	68,600
	Pluto	24582	RSM110/112 Gathering Meter	-80.16256	39.31757	1,440	1,900	68,600
	Pluto	24595	RSM 118 Gathering MM	-80.18918	39.29457	1,440	1,900	68,600
	Pluto	24596	RSM 119 Gathering MM	-80.15786	39.29579	1,440	1,900	68,600
	Pluto	M5219740	RSM110/112 Gathering Meter	-80.16256	39.31757	1,440	1,900	68,600
	Saturn	24454	OXF 114, 115	-80.80857	39.14277	720	600	19,600
	Saturn	24455	OXF 121	-80.8068	39.1359	720	600	19,600
	Saturn	24456	OXF 43 and 44 MM	-80.81166	39.14533	720	1,200	45,900
	Saturn	24470	OXF 149/150/156 MM A Run	-80.78491	39.21018	720	1,200	45,900
	Saturn	24471	OXF 138 Interconnect	-80.78468	39.20905	720	1,200	45,900
	Saturn	24472	OXF 127 Interconnect	-80.80583	39.19561	720	1,200	45,900
	Saturn	24481	OX131/152/153Gathering MM	-80.79538	39.18596	720	1,200	45,900
	Saturn	24492	WEU 1&2 B Gathering Meter	-80.7872	39.2635	720	1,200	45,900
	Saturn	24556	OXF 16 MM	-80.77924	39.18906	720	600	19,600
	Saturn	24625	OXF ▇▇▇/▇▇▇/▇▇▇ ▇▇▇▇▇▇▇▇▇ ▇ ▇▇▇	-▇▇.▇▇▇▇	39.18556	720	1,200	45,900
	Saturn	5100020	PEN 15 Master Meter A Run	-80.936507	39.2502322	720	1,200	45,900
	Saturn	5100048	PEN15 MM B RUN	-80.936507	39.2502322	720	1,200	45,900
	Saturn	5100059	SMI 28 MM A Run	-80.74666	39.25743	720	2,100	78,500
	Saturn	5100061	SMI ▇▇ ▇▇ ▇ ▇▇▇	-▇▇.▇▇▇▇▇	39.25743	720	1,200	45,900
	Saturn	M5212896	WEU-8 Gathering MM	-80.80077	39.27448	720	2,100	78,500
	Saturn	M5214202	WEU 51 MM	-80.76367	39.25619	720	2,100	78,500
	Saturn	M5214970	WEU ▇ ▇▇▇▇▇▇▇▇▇ ▇▇ ▇ ▇▇▇	-▇▇.▇▇▇▇▇	39.29037	720	1,200	45,900
	Saturn	M5222001	OXF 149/150/156MM B Run	-80.78491	39.21018	720	1,200	45,900
	Saturn	M5223803	OXF ▇▇▇-▇▇▇ ▇▇▇▇▇▇▇▇▇ ▇▇ ▇ ▇▇▇	-▇▇.▇▇▇▇▇	39.21132	720	1,200	45,900
	Saturn	M5223804	OXF ▇▇▇-▇▇▇ ▇▇▇▇▇▇▇▇▇ ▇▇ ▇ ▇▇▇	-▇▇.▇▇▇▇▇	39.21132	720	1,200	45,900
	Saturn	M5225932	WEU ▇ ▇▇ ▇ ▇▇▇	-▇▇.▇▇▇▇▇	39.29037	720	1,200	45,900
	Saturn	M5228452	WEU 1-2-49 MM	-80.7872	39.2635	720	1,200	45,900

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